CN220617626U - Raw coal bin separating and feeding system - Google Patents
Raw coal bin separating and feeding system Download PDFInfo
- Publication number
- CN220617626U CN220617626U CN202322343420.7U CN202322343420U CN220617626U CN 220617626 U CN220617626 U CN 220617626U CN 202322343420 U CN202322343420 U CN 202322343420U CN 220617626 U CN220617626 U CN 220617626U
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- coal
- feeder
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- screw
- feeding system
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- 239000003245 coal Substances 0.000 title claims abstract description 117
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 238000000926 separation method Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 abstract description 4
- 238000010248 power generation Methods 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
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- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The utility model discloses a raw coal bin separating and feeding system, which belongs to the technical field of thermal power generation and comprises an octagonal bin, two square cone-shaped separating bins arranged at the lower part of the bin, a screw feeder arranged at the bottom of the separating bins and a coal feeder arranged below the screw feeder, wherein the coal feeder is provided with two inlets, the bottom of each separating bin is provided with one screw feeder, the outlets of the two screw feeders are respectively connected with the two inlets of the coal feeder, and a separating bin steel plate is arranged inside the bin. According to the utility model, the coal feeding amounts of different coal bins can be accurately adjusted through the screw feeder, the coal blending burning requirement of the unit under different load conditions is met, the silo part and the lower half part of the raw coal bin are both in rectangular octagonal structures, the volume of the raw coal bin can be effectively increased, the height of a belt layer is reduced, the investment is saved, and meanwhile, coal blockage is effectively prevented.
Description
Technical Field
The utility model belongs to the technical field of thermal power generation, and particularly relates to a raw coal bin separating and feeding system.
Background
In a thermal power plant, the current coal market is tense in supply and the difficulty in purchasing coal is high, and particularly, the quality difference of the coming coal of each mine point is large and the quality is good and bad; the new energy development is rapid, the load variation of the unit is frequent, and the load capacity of the unit is ensured by adopting a coal blending and burning mode on the premise of ensuring the safe and stable operation of the unit. Because each coal mill corresponds to one raw coal bin, the quality of the coal entering the boiler is limited to a certain extent due to the limitation of the combustion stability of the boiler and the loading capacity of the unit, and the capacity of the boiler for absorbing the inferior coal is not strong. The method increases the demand for purchasing and supplying the coal intangibly, further increases the difficulty of purchasing the coal and is unfavorable for fuel supply.
In order to adapt to the current coal market, ensure that the load capacity of a unit can be met under the current coal supply condition, consume the inferior coal in the current supplied coal, reduce the limitation of the load capacity of the unit caused by coal supply, and adopt the coal types with different qualities for burning under different load working conditions. Therefore, a raw coal bin separated coal feeding system is urgently needed at present, and the coal blending burning requirements of a unit under different load conditions are met by adjusting the coal feeding amounts of different coal bins.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a raw coal bin splitting coal feeding system, which solves the fire coal blending burning requirement of a unit under different load conditions by adjusting the coal feeding amount of different coal bins.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a raw coal storehouse divides storehouse coal feeding system, includes octagon silo, sets up two square cone shape branches storehouse in silo lower part, sets up the screw feeder in branch storehouse bottom and sets up the feeder below the screw feeder, sets up two inlets on the feeder, and every branch storehouse bottom sets up a screw feeder, and the export of two screw feeders links to each other with two inlets of feeder respectively, and the silo is inside to be provided with branch storehouse steel sheet.
The technical scheme of the utility model is further improved as follows: the screw feeder and the coal feeder are controlled by the central controller.
The technical scheme of the utility model is further improved as follows: the silo is divided into two parts by a steel plate for separating the silo, and the two parts are respectively communicated with the two separate silos.
The technical scheme of the utility model is further improved as follows: the coal feeder is a belt type coal feeder, two funnels are arranged on the box body of the coal feeder, and the two funnels correspond to outlets of the two screw feeders respectively.
The technical scheme of the utility model is further improved as follows: the coal feeder is connected with the coal mill, and the coal is conveyed into the coal mill through a coal feeder belt.
The technical scheme of the utility model is further improved as follows: the warehouse separation steel plate 5 adopts a stiffening type double-layer steel plate structure.
By adopting the technical scheme, the utility model has the following technical progress:
the shape of the raw coal bunker is generally determined according to the volume and the coal quality of the coal bunker. The round raw coal bin has good anti-blocking effect due to smooth inner wall, but the hyperbolic and round raw coal bins have relatively small reserves. The silo part and the lower part of the raw coal silo all adopt octagonal structures, the volume of the raw coal silo can be effectively increased compared with that of a round raw coal silo, the height of a belt layer is reduced, investment is saved, and coal blockage is effectively prevented.
According to the method, the partition plates are arranged on the basis of the octagonal raw coal hopper to form the bin-division type blanking coal hopper, and the high-low-fuel-value coal materials are respectively stored in the bin-division chambers so as to timely and selectively supply the high-low-fuel-value coal materials or the mixed-fuel-value coal materials to the unit.
The screw feeder is arranged at the lower part of the sub-bin, the rotation speed of the screw feeder is adjusted, the coal feeding amount of different coal types is adjusted, 2 kinds of quality coal are respectively connected to the coal feeder, the coal feeder is conveyed to the coal mill by a belt, the gate is not required to be arranged for controlling the coal feeding amount in the sub-bin, and the control is more convenient and accurate.
Drawings
FIG. 1 is a schematic diagram of a raw coal bunker splitting coal supply system of the utility model;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a side view of FIG. 1;
wherein, 1, silo, 2, branch storehouse, 3, screw feeder, 4, feeder, 5, branch storehouse steel sheet.
Detailed Description
The utility model is further illustrated by the following examples:
as shown in fig. 1, the raw coal bin sub-bin coal feeding system comprises an octagonal bin 1, two square cone-shaped sub-bins 2 arranged at the lower part of the bin 1, a screw feeder 3 arranged at the bottom of the sub-bins 2 and a coal feeder 4 arranged below the screw feeder 3, wherein two inlets are arranged on the coal feeder 4, one screw feeder 3 is arranged at the bottom of each sub-bin, outlets of the two screw feeders 3 are respectively connected with the two inlets of the coal feeder 4, and a sub-bin steel plate 5 is arranged inside the bin 1. The silo 1 is divided into two parts by a steel plate 5 for separating the silo, and the two parts are respectively communicated with the two sub-silos 2. In order to ensure the strength and rigidity requirements of the sub-warehouse steel plates 5, the sub-warehouse steel plates 5 adopt a stiffening type double-layer steel plate structure.
In a preferred embodiment, the coal feeder 4 is a belt type coal feeder, and two hoppers are arranged on the box body of the coal feeder 4, and correspond to the outlets of the two screw feeders 3 respectively. The coal feeder 4 is connected with a coal mill, and the coal is conveyed into the coal mill through a coal feeder belt. The high and low fuel value coal materials are respectively stored in the sub-bin 2, the coal feeding amounts of different coal types can be adjusted by adjusting the rotating speeds of the 2 screw feeders 3, 2 quality coal fuels are respectively connected into the coal feeder 4, and are conveyed into the coal mill by the coal feeder belt.
According to a preferred embodiment, the separated coal feeding system further comprises a central controller, the screw feeders 3 and the coal feeders 4 are controlled by the central controller, the required quantity of coal materials with different qualities is calculated through coal requirements, and further, different rotating speeds of the 2 screw feeders 3 are controlled through the central controller, so that the coal feeding quantity of different coal types is adjusted.
The raw coal bin splitting coal feeding system is very convenient to implement and is suitable for newly-built or modified thermal generator sets of all grades.
Claims (6)
1. The utility model provides a former coal bunker divides storehouse coal feed system which characterized in that: including octagon silo (1), set up two square cone shape branch warehouses (2) in silo (1) lower part, set up screw feeder (3) and setting up feeder (4) below screw feeder (3) in branch warehouses (2) bottom, set up two inlets on feeder (4), every branch warehouses bottom sets up a screw feeder (3), the export of two screw feeders (3) links to each other with two inlets of feeder (4) respectively, the inside steel sheet (5) that are provided with of silo (1).
2. The raw coal bunker-dividing coal-feeding system according to claim 1, wherein: the screw feeder (3) and the coal feeder (4) are controlled by the central controller.
3. The raw coal bunker-dividing coal-feeding system according to claim 1, wherein: the silo (1) is divided into two parts by a separate steel plate (5), and the two parts are respectively communicated with the two separate cabins (2).
4. The raw coal bunker-dividing coal-feeding system according to claim 1, wherein: the coal feeder (4) is a belt type coal feeder, two funnels are arranged on the box body of the coal feeder (4), and the two funnels correspond to the outlets of the two screw feeders (3) respectively.
5. The raw coal bunker-dividing coal-feeding system according to claim 1, wherein: the coal feeder (4) is connected with the coal mill, and the coal is conveyed into the coal mill through a coal feeder belt.
6. The raw coal bunker-dividing coal-feeding system according to claim 1, wherein: the warehouse separation steel plate (5) adopts a stiffening type double-layer steel plate structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322343420.7U CN220617626U (en) | 2023-08-30 | 2023-08-30 | Raw coal bin separating and feeding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322343420.7U CN220617626U (en) | 2023-08-30 | 2023-08-30 | Raw coal bin separating and feeding system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220617626U true CN220617626U (en) | 2024-03-19 |
Family
ID=90227004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322343420.7U Active CN220617626U (en) | 2023-08-30 | 2023-08-30 | Raw coal bin separating and feeding system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220617626U (en) |
-
2023
- 2023-08-30 CN CN202322343420.7U patent/CN220617626U/en active Active
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